Theme park monolith Disney, Brooklyn’s Barclays Center and Long Island’s Nassau Coliseum all announced Thursday they are getting rid of single-use plastic straws because they’re bad for the environment.

Mickey Mouse and crew will phase out the beverage siphons by mid-2019, and part of the company’s “long-standing commitment to environmental stewardship,” officials said in a statement.

The shift will keep more than 175 million straws out of landfills each year — along with 13 million plastic stirrers, which the company is also eliminating.

Barclays Center, meanwhile, will finish its drinking-straw shake-up by the end of this year, making it the Big Apple’s first sports and entertainment venue to make such a commitment.

Officials at BSE Global, which operates the 18,000-seat home of the NBA’s Nets and NHL’s Islanders, said the ban would divert 3.75 million plastic straws a year from dumps.

The company is moving ahead rather than waiting for the city to enact a law outlawing the environmentally unfriendly straws.

“We have been supporters of the effort to ban single-use plastic straws and believe that if we’re going to get behind it, we need to start with our own arenas,” said Brett Yormark, the CEO of BSE Global.

The Coliseum, which is also operated by BSE, will stop providing plastic straws by 2019.

The Uniondale arena goes through about 1.75 million plastic straws each year.

Instead, Barclays and the Coliseum will offer straw-less lids and straws made from environmentally friendly materials.

Hundreds of millions of plastic straws end up in the world’s oceans each year, becoming entangled in wildlife or poisoning animals that ingest the petroleum-based doo-dads.

A video of scientists removing a straw from a sea turtle’s nose went viral in 2015.

For its part, the Plastics Industry Association trade group has blamed poor recycling practices.

“Regardless of what a straw is made of, we can all agree that it should not end up as litter,” the association said.

Seattle was the first major city to ban plastic straws when it outlawed them earlier this month.

San Francisco’s recently passed a ban on small, plastic food-service items goes into effect in July of next year.

The New York City Council is considering legislation, supported by Mayor de Blasio, to ban single-use plastic straws and stirrers.